Proceedings Computer Graphics International 2000最新文献_第3页

A homotopy model for cup lifting 举杯的同伦模型

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852327

K. Ohmori, T. Kunii

引用次数: 3

Real-time collision detection and response for complex environments 复杂环境下的实时碰撞检测与响应

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852326

B. Geiger

引用次数: 23

Visualization of dominant region in team games and its application to teamwork analysis 团队比赛优势区可视化及其在团队分析中的应用

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852338

Tsuyoshi Taki, J. Hasegawa

引用次数: 87

Ocean waves synthesis using a spectrum-based turbulence function 利用基于谱的湍流函数合成海浪

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852321

S. Thon, J. Dischler, D. Ghazanfarpour

{"title":"Ocean waves synthesis using a spectrum-based turbulence function","authors":"S. Thon, J. Dischler, D. Ghazanfarpour","doi":"10.1109/CGI.2000.852321","DOIUrl":"https://doi.org/10.1109/CGI.2000.852321","url":null,"abstract":"The representation of ocean waves is not a resolved problem in computer graphics yet. There is still no existing method that allows one to simply describe an agitated surface of any size that is visually sufficiently realistic, without using entirely physical models that are usually very complex. We present a simple method to represent and animate an ocean surface in deep water by considering it as a procedural texture. This texture is defined by a combination of two levels of detail. The first one is a superposition of 2D trochoids whose parameters are determined by ocean wave characteristics infrequency domain. In order to increase the visual complexity of this model and to reduce computation, we incorporate a 3D turbulence function to provide a second level of detail. This turbulence function is also determined by frequency characteristics of ocean waves. Since our synthesized ocean waves spectrum approaches a real ocean waves spectrum, we obtain realistic water waves in the spatial domain. The animation of our model is performed by shifting the phase of the trochoids and by moving into the 3D turbulence function. Since our definition is procedural and continuous, it permits us to obtain any size of water surface with any level of detail as well as a simple, direct, antialiasing method. Our model can be used to generate ocean waves using 2D textures or bump maps as well as 3D textures.","PeriodicalId":357548,"journal":{"name":"Proceedings Computer Graphics International 2000","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131989790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 49

Local and global geometric methods for analysis, interrogation, reconstruction, modification and design of shape 局部和全局几何方法的分析，讯问，重建，修改和设计的形状

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852329

Franz-Erich Wolter, K. Friese

{"title":"Local and global geometric methods for analysis, interrogation, reconstruction, modification and design of shape","authors":"Franz-Erich Wolter, K. Friese","doi":"10.1109/CGI.2000.852329","DOIUrl":"https://doi.org/10.1109/CGI.2000.852329","url":null,"abstract":"Gives an overview of some recent methods useful for local and global shape analysis and for the design of solids. These methods include, as new tools for global and local shape analysis, the spectra of the Laplace and Laplace-Beltrami operators and the concept of stable umbilical points, i.e. stable singularities of the \"principal curvature line\" wire-frame model of the solid's boundary surface. Most of the material in this paper deals with the medial axis transform as a tool for shape interrogation, reconstruction, modification and design. We show that it appears to be possible to construct an intuitive user interface that allows one to mould shapes by employing the medial axis transform. We also explain that the medial axis and Voronoi diagram can also be defined and computed on free surfaces in a setting where the geodesic distance between two points p and q on a surface S is defined by the shortest surface path on S joining the two points p, q. This leads to the natural and computable generalized concepts of the geodesic medial axis and geodesic Voronoi diagram on free-form surfaces. Both can be computed with a reasonable speed and with high accuracy (of about 12 digits when double floating-point arithmetic is used for the computations).","PeriodicalId":357548,"journal":{"name":"Proceedings Computer Graphics International 2000","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133284349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 45

Implementing fast cloth simulation with collision response 实现具有碰撞响应的快速布料仿真

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852341

Pascal Volino, N. Magnenat-Thalmann

引用次数: 169

Homological invariants and holorgraphic representations of topological structures in cellular spaces 细胞空间中拓扑结构的同调不变量和全息表示

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852324

G. Baciu, T. Kunii

{"title":"Homological invariants and holorgraphic representations of topological structures in cellular spaces","authors":"G. Baciu, T. Kunii","doi":"10.1109/CGI.2000.852324","DOIUrl":"https://doi.org/10.1109/CGI.2000.852324","url":null,"abstract":"Geometric modeling and computational representations of shapes have been subject to intense research for more than three decades. Interestingly, these subjects are still at the heart of a continuous activity of research and development in computer graphics, virtual environments, image-based rendering, computer-aided geometric design and physical simulations. Currently, geometric and physically-based modeling still face two main challenges: (1) the identification of topological features, and (2) the representation of the modes of interaction between them, both in static and dynamic environments. Current methods have offered many different forms of associating abstract structures with analytical expressions. The variety of modeling tools, from combinational methods to analytic algebraic geometry, not only reflects the richness of ideas in this domain of study but also the desire to improve, enhance and simplify. It is within this realm that we introduce a new framework, called holorgraphic geometric modeling (HGM). This framework combines the advantages of the graph-theoretic representation of combinatorial structures with the analytical flexibility, expressional power and scalability of higher-order, multi-dimensional variables and operators in the form of holors. HGM not only complements the combinatorial structures in geometric modeling but also enhances and reveals new concepts and ideas in the process of developing robust, flexible and scalable domains of formulation for simplicial complexes, cellular spaces, and homotopy in general.","PeriodicalId":357548,"journal":{"name":"Proceedings Computer Graphics International 2000","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130506981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Haptics issues in virtual environments 虚拟环境中的触觉问题

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852345

G. Burdea

{"title":"Haptics issues in virtual environments","authors":"G. Burdea","doi":"10.1109/CGI.2000.852345","DOIUrl":"https://doi.org/10.1109/CGI.2000.852345","url":null,"abstract":"Haptics is a recent enhancement to virtual environments, allowing users to \"touch\" and feel the simulated objects they interact with. Current commercial products allow tactile feedback through desktop interfaces (such as the FEELIt/sup TM/ mouse or the PHANToM/sup TM/ arm) and dextrous tactile and force feedback at the fingertips through haptic gloves (such as the CyberTouch/sup TM/ and the CyberGrasp/sup TM/). Virtual reality haptic programming requires good physical modeling of user interactions, primarily through collision detection, and of object responses, such as surface deformation, hard-contact simulation, slippage, etc. It is at present difficult to simulate complex virtual environments that have a realistic behavior. This task is added to by the recent introduction of haptic toolkits (such as Ghost/sup TM/ or VPS). Current technology suffers from a number of limitations, which go beyond the higher production cost of haptic interfaces. These technical drawbacks include the limited workspace of desktop interfaces, the large weight of force-feedback gloves, the lack of force feedback to the body, safety concerns, etc. Not to be neglected is the high bandwidth requirement of haptics, which is not met by current Internet technology. As a result, it is not possible at present to have a large number of remote participants interacting haptically in a shared virtual space.","PeriodicalId":357548,"journal":{"name":"Proceedings Computer Graphics International 2000","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132857519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 122

Visual simulation of texture/non-texture image synthesis 纹理/非纹理图像合成的视觉模拟

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852351

H. Karam, A. Hassanien, M. Nakajima

引用次数: 2

"The challenges of digital media: research issues and future directions" 数字媒体的挑战:研究问题与未来方向

Proceedings Computer Graphics International 2000 Pub Date : 2000-06-19 DOI: 10.1109/CGI.2000.852334

R. Earnshaw

引用次数: 1